/* roulang page: index */
:root{
  --brand:#1B4C8C;
  --brand-dark:#123A6B;
  --brand-light:#E8F0FA;
  --teal:#0FA3A3;
  --teal-light:#E3F6F6;
  --orange:#F97316;
  --orange-hover:#EA6A0C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#EEF3FA;
  --border:#E2E8F2;
  --line:#EDF1F7;
  --ink:#0F1B2D;
  --text:#33445C;
  --muted:#6B7C93;
  --ok:#16A34A;
  --info:#2563EB;
  --warn:#DC2626;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(27,76,140,.08);
  --sh-hover:0 14px 32px rgba(27,76,140,.14);
  --ease:200ms ease-out;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--text);background:var(--bg);}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- 倒计时条 ---------- */
.countdown-bar{background:var(--brand-dark);color:#fff;font-size:13px;}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.cd-text{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.86);white-space:nowrap;}
.cd-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(15,163,163,.22);flex:none;}
.cd-clock{display:flex;align-items:center;gap:6px;}
.cd-seg{display:inline-flex;align-items:baseline;gap:3px;background:rgba(255,255,255,.12);border-radius:8px;padding:2px 9px;}
.cd-seg b{font-size:14px;font-weight:700;color:#fff;}
.cd-seg i{font-style:normal;font-size:11px;color:rgba(255,255,255,.68);}
.cd-btn{display:inline-flex;align-items:center;height:26px;padding:0 14px;border:1px solid rgba(255,255,255,.55);border-radius:999px;color:#fff;font-size:12px;transition:background var(--ease),color var(--ease),border-color var(--ease);}
.cd-btn:hover{background:#fff;color:var(--brand-dark);border-color:#fff;}
@media (max-width:767px){
  .countdown-inner{height:32px;gap:10px;}
  .cd-text{display:none;}
  .cd-seg{padding:1px 7px;}
  .cd-seg i{display:none;}
}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);transition:box-shadow var(--ease);}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(27,76,140,.10);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;transition:height var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{position:relative;width:32px;height:32px;border-radius:9px;background:var(--brand);overflow:hidden;flex:none;}
.logo-mark::before{content:"";position:absolute;top:-8px;left:9px;width:6px;height:50px;background:rgba(255,255,255,.92);transform:rotate(28deg);}
.logo-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:7px;height:7px;border-radius:50%;background:var(--teal);}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap;}
.site-header.is-scrolled .logo-text{font-size:16px;}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;margin:14px 0;padding:0 15px;border-radius:10px;font-size:15px;color:var(--text);transition:color var(--ease),background-color var(--ease);}
.nav-link::after{content:"";position:absolute;left:50%;bottom:-14px;transform:translateX(-50%);width:0;height:3px;border-radius:999px;background:var(--brand);transition:width var(--ease);}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link:hover::after{width:16px;}
.nav-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.nav-link.is-active::after{width:32px;}
.header-cta{display:inline-flex;align-items:center;height:42px;padding:0 20px;border-radius:var(--r-btn);background:var(--orange);color:#fff;font-size:15px;font-weight:600;transition:background var(--ease),transform var(--ease);}
.header-cta:hover{background:var(--orange-hover);transform:translateY(-2px);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--border);background:#fff;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
@media (max-width:1023px){
  .main-nav,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .logo-text{font-size:14px;}
}
.mobile-overlay{position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:75;opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);}
.mobile-overlay.is-open{opacity:1;visibility:visible;}
.mobile-panel{position:fixed;top:0;left:0;right:0;z-index:80;background:#fff;border-radius:0 0 20px 20px;box-shadow:0 18px 44px rgba(27,76,140,.18);transform:translateY(-101%);transition:transform 280ms ease-out;max-height:100vh;overflow-y:auto;padding-bottom:20px;}
.mobile-panel.is-open{transform:translateY(0);}
.mobile-head{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 20px;border-bottom:1px solid var(--line);}
.mobile-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;color:var(--muted);font-size:22px;line-height:1;}
.mobile-close:hover{background:var(--brand-light);color:var(--brand);}
.mobile-nav{padding:8px 20px 0;}
.mobile-nav a{display:flex;align-items:center;height:52px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);}
.mobile-nav a.is-active{color:var(--brand);font-weight:600;}
.mobile-cta{margin:18px 20px 0;display:flex;align-items:center;justify-content:center;height:48px;border-radius:var(--r-btn);background:var(--orange);color:#fff;font-weight:600;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:16px;font-weight:600;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(249,115,22,.28);}
.btn-orange:hover{background:var(--orange-hover);transform:translateY(-2px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{border:1.5px solid rgba(255,255,255,.75);color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--brand);border-color:#fff;}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand);background:#fff;}
.btn-outline:hover{background:var(--brand-light);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;}
.arrow-link span{transition:transform var(--ease);}
.arrow-link:hover{color:var(--brand-dark);}
.arrow-link:hover span{transform:translateX(4px);}
.arrow-link.sm{font-size:13px;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--alt);}
@media (max-width:767px){.section{padding:48px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section-title{display:flex;align-items:center;gap:12px;font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;color:var(--ink);}
.section-title::before{content:"";width:5px;height:.9em;border-radius:3px;background:var(--teal);flex:none;}
.section-sub{margin-top:14px;font-size:15px;color:var(--muted);max-width:640px;}
.divider{height:1px;background:var(--line);margin:20px 0 32px;}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:500;}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:500;transition:background var(--ease);}
.tag:hover{background:#d7e5f7;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:#0F1B2D;}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(15,27,45,.93) 0%,rgba(15,27,45,.80) 44%,rgba(27,76,140,.52) 100%);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:88px 32px 96px;}
.hero-badge{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:rgba(15,163,163,.18);border:1px solid rgba(15,163,163,.5);color:#8ee6e6;font-size:12px;font-weight:500;}
.hero h1{margin-top:20px;font-size:clamp(30px,4.4vw,54px);line-height:1.15;font-weight:700;color:#fff;letter-spacing:-.3px;}
.hero-sub{margin-top:18px;font-size:17px;color:rgba(255,255,255,.85);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;align-items:center;margin-top:40px;flex-wrap:wrap;row-gap:16px;}
.stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.24);}
.stat:first-child{padding-left:0;border-left:0;}
.stat b{display:block;font-size:24px;font-weight:700;color:#fff;line-height:1.2;}
.stat span{font-size:12px;color:rgba(255,255,255,.72);}
.hero-card{background:#fff;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 56px rgba(6,18,38,.34);}
.hero-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.hero-card-body{padding:22px 24px 24px;}
.hero-card-title{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;}
.hero-points{margin-top:14px;}
.hero-points li{display:flex;gap:12px;padding:9px 0;font-size:14px;color:var(--text);border-bottom:1px dashed var(--line);}
.hero-points li:last-child{border-bottom:0;}
.pt-ico{width:22px;height:22px;border-radius:50%;background:var(--teal-light);color:var(--teal);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none;margin-top:4px;}
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:64px 32px 72px;}
}
@media (max-width:767px){
  .hero-inner{padding:48px 20px 56px;}
  .stat{padding:0 18px;}
  .stat b{font-size:20px;}
}

/* ---------- 卖点错位区 ---------- */
.point-layout{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch;margin-top:36px;}
.point-main{position:relative;background:var(--brand-light);border-radius:var(--r-card);padding:34px 30px;box-shadow:var(--sh-card);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease);}
.point-main:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.point-main .idx{font-size:34px;font-weight:700;color:var(--brand);opacity:.32;line-height:1;font-variant-numeric:tabular-nums;}
.point-main h3{margin-top:16px;font-size:22px;font-weight:700;color:var(--ink);line-height:1.4;}
.point-main p{margin-top:14px;font-size:15px;color:var(--text);}
.point-main .arrow-link{margin-top:24px;}
.point-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.point-item{display:flex;gap:16px;background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);border:1px solid var(--border);transition:transform var(--ease),box-shadow var(--ease);}
.point-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.point-ico{width:44px;height:44px;border-radius:14px;background:var(--teal-light);color:var(--teal);display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex:none;}
.point-item h4{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.point-item p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7;}
@media (max-width:1023px){
  .point-layout{grid-template-columns:1fr;}
}
@media (max-width:639px){
  .point-grid{grid-template-columns:1fr;}
}

/* ---------- 图墙 ---------- */
.gallery{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:140px;gap:16px;margin-top:36px;}
.gal-item{position:relative;margin:0;border-radius:var(--r-img);overflow:hidden;background:var(--brand-light);}
.gal-item img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out;}
.gal-item:hover img{transform:scale(1.03);}
.gal-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 14px;font-size:16px;font-weight:600;color:#fff;background:linear-gradient(to top,rgba(15,27,45,.80),rgba(15,27,45,0));}
.gal-big{grid-column:span 4;grid-row:span 2;}
.gal-small{grid-column:span 2;grid-row:span 1;}
.gal-wide{grid-column:span 3;grid-row:span 1;}
@media (max-width:1023px){
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:160px;}
  .gal-big{grid-column:span 2;grid-row:span 2;}
  .gal-small{grid-column:span 1;grid-row:span 1;}
  .gal-wide{grid-column:span 2;grid-row:span 1;}
  .gal-item figcaption{font-size:15px;}
}
@media (max-width:639px){
  .gallery{grid-template-columns:1fr;grid-auto-rows:180px;}
  .gal-big,.gal-small,.gal-wide{grid-column:span 1;grid-row:span 1;}
  .gal-item:nth-child(n+4){display:none;}
}

/* ---------- CTA 表单 ---------- */
.cta-section{padding:72px 0;}
.cta-panel{position:relative;background:var(--brand);border-radius:var(--r-lg);overflow:hidden;display:grid;grid-template-columns:5fr 7fr;gap:40px;padding:52px 48px;}
.cta-panel::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.055) 0 2px,transparent 2px 22px);pointer-events:none;}
.cta-copy{position:relative;z-index:2;}
.cta-title{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:#fff;}
.cta-copy p{margin-top:16px;font-size:15px;color:rgba(255,255,255,.84);}
.check-list{margin-top:24px;}
.check-list li{position:relative;padding-left:28px;margin-bottom:12px;font-size:15px;color:rgba(255,255,255,.92);}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:50%;background:rgba(15,163,163,.24);border:1.5px solid #37c6c6;}
.check-list li::after{content:"";position:absolute;left:5px;top:13px;width:6px;height:3px;border-left:2px solid #7fe3e3;border-bottom:2px solid #7fe3e3;transform:rotate(-45deg);}
.cta-form-card{position:relative;z-index:2;background:#fff;border-radius:var(--r-card);padding:28px;box-shadow:0 20px 44px rgba(6,18,38,.22);}
.form-row{margin-bottom:18px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.form-label .req{color:var(--warn);}
.form-control{width:100%;height:48px;padding:0 14px;border:1.5px solid var(--border);border-radius:var(--r-btn);background:#fff;color:var(--text);transition:border-color var(--ease),box-shadow var(--ease);}
.form-control::placeholder{color:#9aa9bd;}
.form-control:hover{border-color:#c9d6e8;}
.form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,76,140,.12);}
.form-control.is-error{border-color:var(--warn);box-shadow:0 0 0 3px rgba(220,38,38,.10);}
select.form-control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-error{display:none;margin-top:6px;font-size:12px;color:var(--warn);}
.form-note{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7;}
.form-submit{width:100%;height:48px;border-radius:var(--r-btn);background:var(--orange);color:#fff;font-size:16px;font-weight:600;transition:background var(--ease),transform var(--ease);}
.form-submit:hover{background:var(--orange-hover);transform:translateY(-2px);}
.form-success{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-btn);background:#E9F8EE;color:#15803d;font-size:14px;}
@media (max-width:1023px){
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:40px 28px;}
}
@media (max-width:639px){
  .cta-panel{padding:32px 20px;border-radius:var(--r-card);}
  .cta-form-card{padding:22px;}
}

/* ---------- 资讯列表 ---------- */
.head-line{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:#fff;border-radius:var(--r-card);border:1px solid var(--border);box-shadow:var(--sh-card);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease);}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.news-thumb{display:block;background:var(--brand-light);}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px;}
.news-title{margin-top:12px;font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--brand);}
.news-sum{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px;}
.news-meta time{font-size:13px;color:var(--muted);}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:220px;background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);padding:40px 20px;text-align:center;}
.empty-icon{width:56px;height:56px;border-radius:50%;background:var(--brand-light);display:inline-flex;align-items:center;justify-content:center;color:var(--brand);font-size:22px;font-weight:700;}
.empty-state p{font-size:15px;color:var(--muted);}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.news-grid{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.faq-list{margin-top:32px;display:grid;gap:14px;}
.faq-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;transition:box-shadow var(--ease);}
.faq-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;background:var(--brand);}
.faq-item:hover{box-shadow:var(--sh-card);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:56px;padding:14px 22px 14px 26px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);}
.faq-icon{width:24px;height:24px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--brand-light);color:var(--brand);font-size:16px;line-height:1;transition:transform var(--ease),background var(--ease),color var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--ease);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{padding:0 26px 22px;font-size:15px;color:var(--text);line-height:1.8;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#fff;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{background:#fff;}
.footer-brand .logo-mark::before{background:var(--brand);}
.footer-intro{margin-top:18px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.9;max-width:320px;}
.footer-note{margin-top:12px;font-size:12px;color:rgba(255,255,255,.55);line-height:1.7;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.9;margin-bottom:10px;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13px;color:rgba(255,255,255,.62);}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 36px;}.footer-bottom{flex-direction:column;align-items:flex-start;}}

/* roulang page: article */
:root{
  --primary:#1B4C8C;
  --primary-dark:#123A6B;
  --primary-light:#E8F0FA;
  --teal:#0FA3A3;
  --teal-light:#E3F6F6;
  --orange:#F97316;
  --orange-hover:#EA6A0C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#EEF3FA;
  --border:#E2E8F2;
  --divider:#EDF1F7;
  --title:#0F1B2D;
  --text:#33445C;
  --muted:#6B7C93;
  --success:#16A34A;
  --danger:#DC2626;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,76,140,.08);
  --shadow-hover:0 14px 32px rgba(27,76,140,.14);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);background:var(--primary-light)}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.2px;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(27,76,140,.20)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(249,115,22,.24)}
.btn-orange:hover{background:var(--orange-hover);transform:translateY(-2px)}
.btn-ghost{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-ghost:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;min-height:44px}
.btn-link svg{transition:transform var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:500;line-height:1}
.badge-teal{background:var(--teal-light);color:#0B7E7E}
.tag-pill{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:500;transition:background-color var(--ease),color var(--ease)}
.tag-pill:hover{background:var(--primary);color:#fff}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--divider);
  transition:height var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(27,76,140,.10)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.logo-mark{position:relative;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));flex:0 0 auto}
.logo-mark::before{content:"";position:absolute;left:8px;top:8px;width:14px;height:3px;border-radius:2px;background:rgba(255,255,255,.92);transform:rotate(-28deg)}
.logo-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.logo-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.2px}
.main-nav{display:none}
@media(min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:4px}
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--text);transition:color var(--ease),background-color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);
  width:0;height:3px;border-radius:999px;background:var(--primary);transition:width var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link:hover::after{width:22px}
.nav-link.is-active{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav-link.is-active::after{width:22px}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn-primary{display:none}
@media(min-width:640px){.header-actions .btn-primary{display:inline-flex}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--primary);
  transition:background-color var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:var(--primary-light);border-color:var(--primary-light)}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle .bars{position:relative;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform var(--ease),top var(--ease)}
.nav-toggle .bars::before{top:-6px}
.nav-toggle .bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .bars{background:transparent}
.nav-toggle[aria-expanded="true"] .bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars::after{top:0;transform:rotate(-45deg)}
.mobile-nav{display:none;background:#fff;border-top:1px solid var(--divider);box-shadow:0 12px 28px rgba(27,76,140,.10)}
.mobile-nav.is-open{display:block}
.mobile-nav .container{padding-top:8px;padding-bottom:20px}
.mobile-nav-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;border-bottom:1px solid var(--divider);font-size:16px;color:var(--text)}
.mobile-nav-link:hover{color:var(--primary)}
.mobile-nav-link.is-active{color:var(--primary);font-weight:600}
.mobile-cta{width:100%;margin-top:18px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--alt);border-bottom:1px solid var(--border)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--muted);line-height:1.6}
.crumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.crumb-sep{color:#B7C3D6}
.crumb-current{color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章区 ---------- */
.page-wrap{padding:40px 0 72px}
@media(min-width:768px){.page-wrap{padding:56px 0 88px}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;justify-content:center}
@media(min-width:1280px){.article-layout{grid-template-columns:minmax(0,800px) 240px;gap:48px}}
.article-main{min-width:0;max-width:800px;margin:0 auto;width:100%}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--divider)}
.article-head h1{
  font-size:clamp(28px,3.2vw,38px);line-height:1.3;font-weight:700;color:var(--title);
  max-width:20em;letter-spacing:-.2px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted)}
.meta-dot{color:#C6D0DF}
.meta-share{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;
  background:var(--alt);color:var(--primary);border:1px solid var(--border);transition:background-color var(--ease),transform var(--ease);
}
.share-btn:hover{background:var(--primary-light);transform:translateY(-2px)}

/* 正文排版 */
.article-content{font-size:17px;line-height:1.9;color:var(--text);margin-top:32px;word-wrap:break-word;overflow-wrap:break-word}
.article-content p{margin:0 0 1.2em;max-width:38em}
.article-content > *:last-child{margin-bottom:0}
.article-content h2{
  position:relative;font-size:24px;line-height:1.35;font-weight:700;color:var(--title);
  margin:44px 0 16px;padding-left:16px;scroll-margin-top:96px;
}
.article-content h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:999px;background:var(--primary)}
.article-content h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--title);margin:30px 0 12px;scroll-margin-top:96px}
.article-content h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--title);margin:24px 0 10px}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:0}
.article-content ul li{position:relative;padding-left:22px;margin-bottom:8px}
.article-content ul li::before{content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:2px;background:var(--teal)}
.article-content ol{counter-reset:item}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:8px}
.article-content ol li::before{
  counter-increment:item;content:counter(item);position:absolute;left:0;top:.35em;
  width:20px;height:20px;border-radius:6px;background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;line-height:20px;text-align:center;
}
.article-content blockquote{
  margin:24px 0;padding:20px;background:var(--bg);border-left:4px solid var(--teal);
  border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--text);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{margin:24px auto;border-radius:var(--r-img)}
.article-content figure{margin:24px 0}
.article-content figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--primary-dark)}
.article-content code{background:#F1F5FB;border:1px solid var(--border);border-radius:6px;padding:2px 6px;font-size:15px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-content pre{background:#0F1B2D;color:#E8F0FA;padding:18px;border-radius:var(--r-btn);overflow-x:auto;margin:24px 0}
.article-content pre code{background:none;border:0;color:inherit;padding:0}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--border);border-radius:var(--r-btn);overflow:hidden}
.article-content th{background:var(--primary-light);color:var(--title);font-weight:600;text-align:left}
.article-content th,.article-content td{padding:12px 16px;border:1px solid var(--border)}
.article-content tbody tr:nth-child(even){background:#FAFBFE}
.article-content hr{border:0;border-top:1px solid var(--divider);margin:32px 0}

/* 空态 / 骨架 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;padding:40px 24px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);text-align:center;
}
.empty-icon{display:flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:50%;background:var(--primary-light);color:var(--primary)}
.skeleton{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-card)}
.sk-line{height:14px;border-radius:999px;background:linear-gradient(90deg,#EEF3FA 0%,#E1E9F5 50%,#EEF3FA 100%);background-size:200% 100%;animation:sk 1.4s infinite;margin-bottom:16px}
.sk-line.w90{width:90%}.sk-line.w70{width:70%}.sk-line.w50{width:50%}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.sk-note{font-size:14px;color:var(--muted);margin-top:8px}

/* 标签与上下篇 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--divider)}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:2px}
.prevnext{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
@media(min-width:640px){.prevnext{grid-template-columns:1fr 1fr}}
.pn-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFDDF2}
.pn-dir{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--teal);font-weight:600;letter-spacing:.4px}
.pn-title{margin-top:8px;font-size:15px;font-weight:600;color:var(--title);line-height:1.5;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* 目录侧栏 */
.article-aside{display:none}
@media(min-width:1280px){
  .article-aside{display:block}
  .toc-panel{position:sticky;top:96px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card)}
}
.toc-panel h2{font-size:14px;font-weight:600;color:var(--title);padding-bottom:12px;border-bottom:1px solid var(--divider);margin-bottom:10px}
.toc-list{max-height:60vh;overflow:auto;scrollbar-width:none}
.toc-list::-webkit-scrollbar{display:none}
.toc-list a{display:block;padding:8px 10px;font-size:14px;color:var(--muted);border-left:2px solid transparent;border-radius:0 8px 8px 0;line-height:1.6;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
.toc-list a:hover{color:var(--primary);background:var(--bg)}
.toc-list a.is-active{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:var(--primary-light)}
.toc-hint{font-size:12px;color:var(--muted);margin-top:10px;padding-top:10px;border-top:1px solid var(--divider)}

/* 章节通用 */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:80px 0}}
.section-alt{background:var(--alt)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.sec-title{position:relative;font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;color:var(--title);padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:999px;background:var(--teal)}
.sec-sub{margin-top:10px;font-size:15px;color:var(--muted)}
.sec-rule{height:1px;background:var(--divider);margin-top:20px}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:32px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFDDF2}
.card-media{position:relative;aspect-ratio:16/10;background:var(--primary-light);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 300ms ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;font-weight:600;color:var(--title);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--divider);font-size:13px;color:var(--muted)}
.card-foot .read{display:inline-flex;align-items:center;gap:4px;color:var(--primary);font-weight:600;font-size:13px}
.card-foot .read svg{transition:transform var(--ease)}
.card:hover .card-foot .read svg{transform:translateX(4px)}

/* 返回列表 CTA */
.back-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;margin-top:36px;padding:24px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-card)}
.back-row p{font-size:15px;color:var(--muted)}
.back-row strong{display:block;font-size:17px;color:var(--title);font-weight:600;margin-bottom:4px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.86);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 40px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px}}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo{margin-bottom:16px}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.78);max-width:34em}
.footer-note{font-size:12px;line-height:1.8;color:rgba(255,255,255,.55);margin-top:12px;max-width:34em}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.78);transition:color var(--ease),transform var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:8px;line-height:1.8}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;color:rgba(255,255,255,.6)}

/* roulang page: category1 */
:root{
  --brand:#1B4C8C;
  --brand-dark:#123A6B;
  --brand-light:#E8F0FA;
  --teal:#0FA3A3;
  --teal-light:#E3F6F6;
  --accent:#F97316;
  --accent-hover:#EA6A0C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#EEF3FA;
  --border:#E2E8F2;
  --divider:#EDF1F7;
  --ink:#0F1B2D;
  --body:#33445C;
  --muted:#6B7C93;
  --ok:#16A34A;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,76,140,.08);
  --shadow-hover:0 14px 32px rgba(27,76,140,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:768px){
  .container{padding-left:32px;padding-right:32px}
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0}

/* ---------- 顶部倒计时条 ---------- */
.topbar{
  background:var(--brand-dark);
  color:#fff;
  min-height:36px;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:36px;font-size:13px;
}
.topbar-tip{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.88)}
.topbar-dot{
  width:8px;height:8px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 4px rgba(15,163,163,.22);
  flex:none;
}
.countdown{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.02em}
.countdown .cd-cell{
  background:rgba(255,255,255,.12);
  border-radius:6px;
  padding:2px 7px;
  min-width:34px;
  text-align:center;
}
.countdown .cd-sep{color:rgba(255,255,255,.5)}
.topbar .btn-ghost{
  border:1px solid rgba(255,255,255,.45);
  color:#fff;background:transparent;
  font-size:12px;padding:4px 12px;border-radius:999px;
  transition:all .2s ease-out;white-space:nowrap;
}
.topbar .btn-ghost:hover{background:#fff;color:var(--brand-dark);border-color:#fff}
@media(max-width:767px){
  .topbar-tip span{display:none}
  .topbar-inner{gap:10px}
  .countdown .cd-cell{min-width:28px;padding:1px 5px}
}

/* ---------- 页头导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease-out,height .2s ease-out;
}
.site-header.is-scrolled{
  box-shadow:0 8px 24px rgba(27,76,140,.10);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .2s ease-out;
}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:30px;height:30px;border-radius:8px;flex:none;
  background:var(--brand);
  position:relative;
  overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 42%,rgba(255,255,255,.85) 43%,rgba(255,255,255,.85) 52%,transparent 53%),
             linear-gradient(135deg,transparent 60%,rgba(15,163,163,.95) 61%,rgba(15,163,163,.95) 72%,transparent 73%);
}
.logo-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;
  width:6px;height:6px;border-radius:50%;background:var(--teal);
}
.logo-text{
  font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:8px;
  font-size:15px;color:var(--body);
  transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:3px;
  border-radius:3px;background:var(--brand);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--brand);background:rgba(27,76,140,.05)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{
  color:var(--brand);font-weight:600;background:var(--brand-light);
}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.nav-toggle:hover{background:var(--brand-light);border-color:#CBD9EC}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s ease-out;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-nav{
  display:none;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 12px 28px rgba(27,76,140,.10);
}
.mobile-nav.is-open{display:block}
.mobile-nav a{
  display:flex;align-items:center;
  min-height:52px;padding:0 20px;
  font-size:16px;color:var(--body);
  border-bottom:1px solid var(--divider);
  transition:background-color .2s ease-out,color .2s ease-out;
}
.mobile-nav a:hover,.mobile-nav a.is-active{background:var(--brand-light);color:var(--brand)}
.mobile-nav .mobile-cta{padding:16px 20px;border-bottom:none}
.mobile-nav .mobile-cta .btn{width:100%;justify-content:center}

@media(max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .logo-text{font-size:15px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(249,115,22,.28)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:#fff;color:var(--brand-dark);border-color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:translateY(0)}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
  transition:color .2s ease-out;
}
.link-arrow svg{transition:transform .2s ease-out}
.link-arrow:hover{color:var(--brand-dark)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--alt)}
.section-white{background:var(--surface)}
@media(max-width:767px){
  .section{padding:48px 0}
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:18px;border-bottom:1px solid var(--divider);margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
  content:"";width:6px;height:26px;border-radius:4px;background:var(--teal);flex:none;
}
.section-head .lead{
  margin-top:10px;font-size:15px;color:var(--muted);max-width:640px;
}
@media(max-width:640px){
  .section-head{flex-direction:column;align-items:flex-start}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding:18px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline}
.breadcrumb .sep{color:#B7C4D6}
.breadcrumb .current{color:var(--muted)}
.breadcrumb-light{color:rgba(255,255,255,.8)}
.breadcrumb-light a{color:rgba(255,255,255,.82)}
.breadcrumb-light a:hover{color:#fff}
.breadcrumb-light .current{color:rgba(255,255,255,.72)}
.breadcrumb-light .sep{color:rgba(255,255,255,.45)}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  color:#fff;
  background-image:linear-gradient(120deg,rgba(15,27,45,.86) 0%,rgba(27,76,140,.72) 58%,rgba(27,76,140,.56) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  padding-bottom:56px;
}
.cat-hero-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
  padding-top:8px;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.15;font-weight:700;color:#fff;
  max-width:15em;
}
.cat-hero .hero-sub{
  margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.9);
  max-width:34em;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12px;font-weight:500;
  background:rgba(255,255,255,.16);color:#fff;
  border:1px solid rgba(255,255,255,.28);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-side{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius-lg);
  padding:24px;
}
.hero-side h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:14px}
.hero-side ul{display:grid;gap:14px}
.hero-side li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.88);line-height:1.7}
.hero-side .ic{
  width:26px;height:26px;border-radius:8px;flex:none;
  background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
}
@media(max-width:1023px){
  .cat-hero-inner{grid-template-columns:1fr;gap:28px}
  .cat-hero h1{max-width:100%}
}

/* ---------- 指标条 ---------- */
.metric-bar{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  margin-top:-32px;position:relative;z-index:5;
  overflow:hidden;
}
.metric-bar .metric{
  padding:24px;text-align:center;
  border-right:1px solid var(--divider);
}
.metric-bar .metric:last-child{border-right:none}
.metric .value{
  font-size:24px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.metric .label{font-size:12px;color:var(--muted);margin-top:4px}
@media(max-width:640px){
  .metric-bar{grid-template-columns:1fr;margin-top:-20px}
  .metric-bar .metric{border-right:none;border-bottom:1px solid var(--divider);padding:16px}
  .metric-bar .metric:last-child{border-bottom:none}
}

/* ---------- 时间轴 ---------- */
.timeline-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.timeline{position:relative;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--teal),rgba(15,163,163,.15));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-26px;top:22px;
  width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
  box-shadow:0 0 0 4px rgba(27,76,140,.10);
}
.tl-card{
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:20px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.tl-time{
  display:inline-block;
  font-size:13px;font-weight:600;color:var(--accent);
  background:rgba(249,115,22,.10);
  border-radius:999px;padding:2px 10px;
  font-variant-numeric:tabular-nums;
}
.tl-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-top:10px}
.tl-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}
@media(max-width:900px){
  .timeline-grid{grid-template-columns:1fr;gap:24px}
}

/* ---------- 资讯卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media(max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:639px){.card-grid{grid-template-columns:1fr}}

.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
  height:100%;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--brand-light);
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:999px;
  font-size:12px;font-weight:500;
  background:var(--brand-light);color:var(--brand);
  width:fit-content;
}
.badge-teal{background:var(--teal-light);color:#0C7C7C}
.card-title{
  font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.card-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- 说明三栏 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media(max-width:1023px){.note-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:639px){.note-grid{grid-template-columns:1fr}}
.note-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.note-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.note-index{
  font-size:13px;font-weight:700;color:var(--teal);letter-spacing:.08em;font-variant-numeric:tabular-nums;
}
.note-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-top:10px}
.note-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}
.note-list{margin-top:14px;display:grid;gap:10px}
.note-list li{display:flex;gap:10px;font-size:14px;color:var(--body);line-height:1.7}
.check{
  width:18px;height:18px;border-radius:50%;flex:none;margin-top:4px;
  background:var(--teal-light);color:#0C7C7C;
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;
}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(115deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;border-radius:var(--radius-lg);
  padding:48px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.06) 0 2px,transparent 2px 14px);
  pointer-events:none;
}
.cta-band-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:6fr 5fr;gap:40px;align-items:center;
}
.cta-band h2{
  font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;color:#fff;
}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.85)}
.cta-checks{display:grid;gap:10px;margin-top:20px}
.cta-checks li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.92)}
.cta-checks .check{background:rgba(15,163,163,.9);color:#fff}
.cta-panel{
  background:#fff;color:var(--body);
  border-radius:var(--radius-card);
  padding:24px;box-shadow:0 18px 40px rgba(9,24,46,.24);
}
.cta-panel h3{font-size:17px;font-weight:600;color:var(--ink)}
.cta-panel p{color:var(--muted);font-size:13px;margin-top:8px}
.cta-panel .btn{width:100%;margin-top:16px}
@media(max-width:1023px){
  .cta-band{padding:32px}
  .cta-band-inner{grid-template-columns:1fr;gap:28px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);margin-top:0}
.footer-quick{
  background:var(--brand-light);
  border-top:1px solid var(--border);
}
.footer-quick-inner{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  padding:20px 0;
}
.footer-quick-item{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--brand-dark)}
.footer-quick-item .ic{
  width:34px;height:34px;border-radius:10px;background:#fff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:15px;flex:none;
  box-shadow:var(--shadow-card);
}
@media(max-width:767px){.footer-quick-inner{grid-template-columns:1fr;padding:16px 0}}

.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding:56px 0 40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.78);max-width:34em}
.footer-note{font-size:13px;line-height:1.8;color:rgba(255,255,255,.6);margin-top:12px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.78);
  display:inline-block;
  transition:color .2s ease-out,transform .2s ease-out;
}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.85;margin-bottom:8px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.62);
}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding:44px 0 32px}
}
@media(max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --brand:#1B4C8C;
  --brand-dark:#123A6B;
  --brand-light:#E8F0FA;
  --teal:#0FA3A3;
  --teal-light:#E3F6F6;
  --orange:#F97316;
  --orange-hover:#EA6A0C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#EEF3FA;
  --border:#E2E8F2;
  --divider:#EDF1F7;
  --title:#0F1B2D;
  --text:#33445C;
  --muted:#6B7C93;
  --success:#16A34A;
  --info:#2563EB;
  --danger:#DC2626;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,76,140,.08);
  --shadow-hover:0 14px 32px rgba(27,76,140,.14);
  --focus:2px solid #F97316;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
.site-body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.site-body img{max-width:100%;height:auto;display:block}
.site-body a{text-decoration:none;color:var(--brand);transition:color .2s ease-out,background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.site-body ul,.site-body ol{margin:0;padding:0}
.site-body h1,.site-body h2,.site-body h3,.site-body h4{margin:0;color:var(--title);font-weight:700}
.site-body p{margin:0 0 1em}
.site-body :focus-visible{outline:var(--focus);outline-offset:2px;border-radius:6px}
.site-body .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){
  .site-body .container{padding-left:32px;padding-right:32px}
}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:#fff;color:var(--brand);padding:10px 18px;border-radius:0 0 10px 0;
  font-size:14px;font-weight:600;box-shadow:var(--shadow-card);
}
.skip-link:focus{left:0}

/* 顶栏倒计时 */
.countdown-bar{background:var(--brand-dark);color:#fff;font-size:13px}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:36px}
.cd-text{margin:0;color:rgba(255,255,255,.86);font-size:13px;white-space:nowrap}
.cd-timer{display:flex;align-items:center;gap:4px;font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.4px}
.cd-num{display:inline-block;min-width:22px;text-align:center;background:rgba(255,255,255,.12);border-radius:6px;padding:1px 4px;font-size:13px}
.cd-label{font-size:12px;color:rgba(255,255,255,.7);font-weight:400}
.cd-sep{color:rgba(255,255,255,.45);font-weight:400}
.cd-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.5);color:#fff;font-size:12px;white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out;
}
.cd-btn:hover{background:#fff;color:var(--brand-dark)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--divider);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(27,76,140,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s ease-out}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  position:relative;width:30px;height:30px;border-radius:9px;background:var(--brand);flex:0 0 auto;display:inline-block;
}
.logo-mark::before{
  content:"";position:absolute;left:6px;top:8px;width:14px;height:3px;border-radius:2px;background:#fff;
  transform:rotate(-24deg);box-shadow:0 7px 0 rgba(255,255,255,.62);
}
.logo-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;width:6px;height:6px;border-radius:50%;background:var(--teal);
}
.logo-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.2px;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:4px;margin-left:auto}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--text);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:1px;width:24px;height:3px;border-radius:3px;background:var(--brand);
  transform:translateX(-50%) scaleX(0);transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light)}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light)}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
@media (min-width:1024px){.header-actions{margin-left:0}}
.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;cursor:pointer;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.nav-toggle:hover{border-color:var(--brand);box-shadow:var(--shadow-card)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand);transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-panel{display:none;background:#fff;border-bottom:1px solid var(--divider);box-shadow:0 12px 24px rgba(27,76,140,.08)}
.mobile-panel.is-open{display:block}
.mobile-panel .container{padding-top:8px;padding-bottom:18px}
.mobile-link{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--title);
  border-bottom:1px solid var(--divider);
}
.mobile-link.is-active{color:var(--brand);font-weight:600}
.mobile-link:hover{color:var(--brand)}
.mobile-cta{margin-top:18px;width:100%}
@media (min-width:1024px){.mobile-panel{display:none !important}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;font-family:inherit;border:1.5px solid transparent;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--orange-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 22px rgba(249,115,22,.28)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
@media (max-width:640px){.header-cta{display:none}}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:500;letter-spacing:.3px;
}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--brand);font-size:13px;font-weight:500;
}
.tag i{color:var(--teal);font-size:12px}

/* 页面首屏 */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--alt) 100%);
  border-bottom:1px solid var(--border);
  padding:36px 0 56px;
}
@media (min-width:1024px){.page-hero{padding:44px 0 72px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand);text-decoration:underline}
.crumb .sep{color:#C3CEDD}
.crumb .current{color:var(--muted)}
.page-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.22;
  font-weight:700;
  color:var(--title);
  margin:14px 0 18px;
  max-width:20em;
}
.lede{max-width:840px;font-size:16px;line-height:1.9;color:var(--text);margin:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;list-style:none}

/* 主体分栏 */
.feature-wrap{padding:56px 0 72px;background:var(--bg)}
@media (min-width:1024px){.feature-wrap{padding:72px 0 88px}}
.feature-layout{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){
  .feature-layout{grid-template-columns:minmax(230px,3fr) minmax(0,9fr);gap:32px;align-items:start}
}
.anchor-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.anchor-card{position:sticky;top:96px}}
.anchor-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.6px;margin:0 0 14px}
.anchor-nav{display:grid;gap:4px}
.anchor-link{
  display:block;padding:10px 12px;border-radius:10px;border-left:3px solid transparent;
  font-size:15px;color:var(--text);
}
.anchor-link:hover{background:var(--brand-light);color:var(--brand)}
.anchor-link.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;border-left-color:var(--brand)}
.anchor-help{
  margin-top:18px;padding-top:18px;border-top:1px solid var(--divider);font-size:13px;line-height:1.8;color:var(--muted);
}
.anchor-help strong{display:block;color:var(--title);font-size:14px;margin-bottom:6px}

/* 内容分区 */
.feature-section{
  background:#fff;border:1px solid var(--border);border-radius:20px;
  padding:26px 22px;box-shadow:var(--shadow-card);scroll-margin-top:110px;
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
@media (min-width:768px){.feature-section{padding:34px 32px}}
.feature-section + .feature-section{margin-top:22px}
.feature-section.alt{background:var(--alt);border-color:transparent;box-shadow:none}
.sec-index{display:inline-block;font-size:13px;font-weight:600;color:var(--teal);letter-spacing:1.5px;margin-bottom:8px;font-variant-numeric:tabular-nums}
.sec-title{
  position:relative;padding-left:14px;
  font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--title);
  margin:0 0 12px;
}
.sec-title::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:4px;background:var(--teal)}
.sec-lead{font-size:15.5px;line-height:1.9;color:var(--text);margin:0}
.sec-sub{font-size:17px;font-weight:600;color:var(--title);margin:26px 0 8px}

/* 概览指标 */
.metric-row{display:grid;gap:14px;grid-template-columns:1fr;margin-top:22px;list-style:none}
@media (min-width:640px){.metric-row{grid-template-columns:repeat(3,1fr)}}
.metric-item{
  background:var(--brand-light);border-radius:var(--r-card);padding:18px 20px;
}
.feature-section.alt .metric-item{background:#fff}
.metric-num{display:block;font-size:24px;font-weight:700;color:var(--brand);line-height:1.3;font-variant-numeric:tabular-nums}
.metric-label{display:block;font-size:13px;color:var(--muted);margin-top:4px}

/* 图文 */
.figure{margin:22px 0 0}
.figure img{
  width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  background:var(--brand-light);
}
.figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}

/* 要点清单 */
.check-list{list-style:none;display:grid;gap:12px;margin:18px 0 0}
.check-list li{position:relative;padding-left:30px;font-size:15px;line-height:1.8;color:var(--text)}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:var(--teal-light);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:11px;width:8px;height:4px;
  border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg);
}

/* 表格 */
.table-scroll{
  margin-top:22px;border:1px solid var(--border);border-radius:var(--r-img);
  overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.spec-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14.5px}
.spec-table thead th{
  background:var(--brand-light);color:var(--brand-dark);font-weight:600;text-align:left;
  padding:14px 16px;border-bottom:1px solid var(--border);white-space:nowrap;font-size:14px;
}
.spec-table td{padding:14px 16px;border-bottom:1px solid var(--divider);color:var(--text);line-height:1.7}
.spec-table tbody tr:nth-child(even){background:#FAFCFE}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table td:first-child{font-weight:600;color:var(--title);white-space:nowrap}

/* FAQ */
.faq-list{margin-top:20px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow .2s ease-out;
}
.feature-section.alt .faq-item{background:#fff}
.faq-item + .faq-item{margin-top:12px}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  min-height:56px;padding:14px 20px 14px 22px;background:none;border:0;cursor:pointer;
  font-family:inherit;font-size:16px;font-weight:600;color:var(--title);text-align:left;line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out;padding:0 22px}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{margin:0 0 18px;font-size:15px;line-height:1.8;color:var(--text)}

/* CTA 通栏 */
.cta-band{
  position:relative;background:var(--brand);color:#fff;padding:56px 0;overflow:hidden;
}
@media (min-width:1024px){.cta-band{padding:72px 0}}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.06) 0 2px,rgba(255,255,255,0) 2px 18px);
}
.cta-inner{position:relative;z-index:1;display:grid;gap:26px}
@media (min-width:1024px){.cta-inner{grid-template-columns:5fr 7fr;gap:44px;align-items:center}}
.cta-band h2{
  font-size:clamp(22px,2.8vw,32px);line-height:1.3;color:#fff;margin:0 0 14px;
}
.cta-band p{font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.86);margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
@media (max-width:520px){
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}
.cta-panel{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  border-radius:20px;padding:12px 22px;
}
.cta-list{list-style:none}
.cta-list li{
  display:flex;align-items:flex-start;gap:12px;padding:15px 0;
  border-bottom:1px solid rgba(255,255,255,.14);font-size:15px;line-height:1.75;color:rgba(255,255,255,.92);
}
.cta-list li:last-child{border-bottom:0}
.cta-list i{color:#7FE3E3;margin-top:5px;font-size:14px;flex:0 0 auto}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.16)}
.footer-intro{font-size:14px;line-height:1.85;margin:16px 0 12px;color:rgba(255,255,255,.78)}
.footer-note{font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.58);margin:0}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-col ul{list-style:none;display:grid;gap:11px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.78)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);margin:0 0 10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;
  margin-top:42px;padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom p{margin:0}

/* roulang page: category3 */
:root{
  --brand:#1B4C8C;
  --brand-dark:#123A6B;
  --brand-light:#E8F0FA;
  --teal:#0FA3A3;
  --teal-light:#E3F6F6;
  --orange:#F97316;
  --orange-hover:#EA6A0C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#EEF3FA;
  --border:#E2E8F2;
  --line:#EDF1F7;
  --title:#0F1B2D;
  --text:#33445C;
  --muted:#6B7C93;
  --ok:#16A34A;
  --warn:#DC2626;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:14px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,76,140,.08);
  --sh-hover:0 14px 32px rgba(27,76,140,.14);
  --sh-deep:0 2px 4px rgba(15,27,45,.06), 0 16px 40px rgba(27,76,140,.14);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--title);line-height:1.3;font-weight:700;}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.15;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{line-height:1.85;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
.narrow{max-width:900px;margin:0 auto;width:100%;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:200;}
.skip-link:focus{left:0;}

/* 顶部倒计时条 */
.countdown-bar{background:var(--brand-dark);color:#fff;font-size:13px;}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:4px;padding-bottom:4px;}
.countdown-text{display:flex;align-items:center;gap:8px;white-space:nowrap;}
.countdown-dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(15,163,163,.25);}
.countdown-timer{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.5px;}
.countdown-timer .unit{background:rgba(255,255,255,.12);border-radius:6px;padding:2px 8px;min-width:34px;text-align:center;}
.countdown-btn{border:1px solid rgba(255,255,255,.55);color:#fff;border-radius:var(--r-pill);padding:4px 14px;font-size:12px;white-space:nowrap;min-height:28px;display:inline-flex;align-items:center;}
.countdown-btn:hover{background:#fff;color:var(--brand-dark);}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);transition:box-shadow var(--ease),height var(--ease);}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(27,76,140,.10);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;min-height:44px;}
.logo-mark{position:relative;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));display:inline-block;flex:0 0 auto;overflow:hidden;}
.logo-mark::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 42%,rgba(255,255,255,.85) 42%,rgba(255,255,255,.85) 54%,transparent 54%);}
.logo-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:7px;height:7px;border-radius:50%;background:var(--teal);}
.logo-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.2px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:var(--r-pill);font-size:15px;color:var(--text);}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.nav-link.is-active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:20px;height:3px;border-radius:999px;background:var(--brand);}
.header-cta{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;border-radius:var(--r-btn);padding:0 20px;height:44px;font-size:15px;font-weight:600;}
.header-cta:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-card);}
.menu-btn{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--border);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.menu-btn span{display:block;width:20px;height:2px;background:var(--title);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{display:none;position:fixed;left:0;right:0;top:0;z-index:99;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 16px 40px rgba(27,76,140,.14);padding:88px 20px 24px;}
.mobile-panel.is-open{display:block;}
.mobile-panel a.m-link{display:flex;align-items:center;height:52px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);padding:0 4px;}
.mobile-panel a.m-link.is-active{color:var(--brand);font-weight:600;}
.mobile-panel .m-cta{margin-top:20px;display:flex;align-items:center;justify-content:center;height:48px;background:var(--brand);color:#fff;border-radius:var(--r-btn);font-weight:600;}

/* 面包屑 */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C6D8;}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;}
.breadcrumb .current{color:var(--muted);}

/* 通用按钮与链接 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;}
.btn-primary{background:var(--orange);color:#fff;}
.btn-primary:hover{background:var(--orange-hover);transform:translateY(-2px);box-shadow:0 12px 24px rgba(249,115,22,.28);}
.btn-solid{background:var(--brand);color:#fff;}
.btn-solid:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-hover);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff;}
.btn-outline:hover{background:var(--brand-light);}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;min-height:44px;}
.link-arrow svg{transition:transform var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* 通用板块 */
.sec{padding:72px 0;}
.sec-alt{background:var(--alt);}
.sec-white{background:var(--surface);}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;color:var(--teal);background:var(--teal-light);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px;}
.eyebrow.is-brand{color:var(--brand);background:var(--brand-light);}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.h2-bar{display:flex;align-items:center;gap:12px;}
.h2-bar::before{content:"";width:5px;height:26px;border-radius:999px;background:var(--teal);flex:0 0 auto;}

/* 页面首屏（帮助中心窄栏） */
.help-hero{background:var(--surface);padding:40px 0 64px;border-bottom:1px solid var(--line);}
.help-hero .narrow{text-align:center;}
.help-hero h1{margin:10px 0 18px;}
.help-hero .lede{color:var(--text);font-size:17px;max-width:720px;margin:0 auto;}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px;}
.tag-pill{display:inline-flex;align-items:center;gap:6px;background:var(--brand-light);color:var(--brand);font-size:13px;border-radius:var(--r-pill);padding:6px 14px;}
.tag-pill.teal{background:var(--teal-light);color:#0B7C7C;}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:28px;}
.hero-media{margin-top:44px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card);}
.hero-media img{width:100%;height:auto;border-radius:0;aspect-ratio:16/9;object-fit:cover;}

/* 编号步骤 */
.step-list{counter-reset:step;}
.step-item{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--line);}
.step-item:last-child{border-bottom:0;}
.step-num{font-size:clamp(32px,4.4vw,52px);font-weight:700;color:var(--brand-light);line-height:1;font-variant-numeric:tabular-nums;flex:0 0 auto;width:96px;-webkit-text-stroke:1px rgba(27,76,140,.35);}
.step-body h3{margin-bottom:8px;}
.step-body p{color:var(--muted);font-size:15px;}
.step-meta{display:inline-flex;align-items:center;gap:8px;margin-top:12px;font-size:13px;color:var(--teal);background:var(--teal-light);border-radius:var(--r-pill);padding:4px 12px;}

/* 场景速查 */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);transition:transform var(--ease),box-shadow var(--ease);}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.scene-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{font-size:14px;color:var(--muted);}
.scene-card ul{margin-top:14px;display:grid;gap:8px;}
.scene-card li{position:relative;padding-left:18px;font-size:14px;color:var(--text);}
.scene-card li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--teal);}

/* 数据条 */
.stat-band{background:var(--brand);color:#fff;border-radius:var(--r-lg);padding:32px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center;}
.stat-band .num{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;}
.stat-band .label{font-size:13px;color:rgba(255,255,255,.78);margin-top:4px;}

/* FAQ */
.faq-list{display:grid;gap:14px;}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-pill);box-shadow:var(--sh-card);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item.is-open{border-color:rgba(27,76,140,.35);box-shadow:var(--sh-hover);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:56px;padding:12px 26px;text-align:left;font-size:16px;font-weight:600;color:var(--title);}
.faq-q:hover{color:var(--brand);}
.faq-sign{position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-light);color:var(--brand);transition:transform var(--ease),background-color var(--ease);}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);}
.faq-sign::before{width:12px;height:2px;}
.faq-sign::after{width:2px;height:12px;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--orange);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease-out;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{padding:0 26px 22px;font-size:15px;color:var(--text);line-height:1.8;}

/* 联系块 */
.contact-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.contact-item h4{margin-bottom:6px;}
.contact-item p{font-size:14px;color:var(--muted);}
.contact-item a{color:var(--brand);font-weight:600;}
.contact-item a:hover{text-decoration:underline;}

/* CTA 通栏 */
.cta-band{background:var(--brand);color:#fff;border-radius:var(--r-lg);padding:48px 40px;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.06);}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(255,255,255,.82);margin-top:14px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* 图片占位 */
.media{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--brand-light);}
.media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.media.is-fallback::after{content:"图片加载中";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:13px;background:var(--brand-light);}

/* 信息条 + 页脚 */
.info-strip{background:var(--brand-light);}
.info-strip-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:20px 0;font-size:14px;color:var(--brand-dark);}
.info-strip-inner div{display:flex;align-items:center;gap:10px;}
.info-strip-inner span.dot{width:8px;height:8px;border-radius:50%;background:var(--teal);flex:0 0 auto;}
.site-footer{background:var(--brand-dark);color:#fff;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-intro{font-size:14px;color:rgba(255,255,255,.78);margin-top:16px;line-height:1.8;}
.footer-note{font-size:13px;color:rgba(255,255,255,.6);margin-top:12px;}
.footer-col h3{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.78);display:inline-block;}
.footer-col li a:hover{color:#fff;transform:translateX(2px);}
.footer-col p{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:8px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:12.5px;color:rgba(255,255,255,.68);}

@media (max-width:1279px){
  .step-num{width:80px;}
}
@media (max-width:1023px){
  .main-nav,.header-cta{display:none;}
  .menu-btn{display:inline-flex;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:24px;}
  .cta-band{grid-template-columns:1fr;}
  .contact-card{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .sec{padding:48px 0;}
  .countdown-text{display:none;}
  .countdown-inner{justify-content:space-between;}
  .hero-actions .btn{width:100%;}
  .scene-grid{grid-template-columns:1fr;}
  .info-strip-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .step-item{flex-direction:column;gap:12px;}
  .step-num{width:auto;}
  .cta-band{padding:36px 24px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:519px){
  .logo-text{font-size:14px;}
  .faq-q{font-size:15px;padding:12px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .countdown-timer .unit{min-width:30px;padding:2px 6px;}
}